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Can someone mark my answer? (AS Mechanics)

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    Can someone who do mechanics maths check if my answer is right for the question in the image attached? Also if it isn't right can you let me know what I did wrong? Thanks.

    I hope my handwriting is legible by the way.
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    Slightly wrong (first part is right second part should be ^1/2 not -1/2
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    (Original post by AlexS101)
    Slightly wrong (first part is right second part should be ^1/2 not -1/2
    Okay thanks.

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